diff --git a/src/monster.cpp b/src/monster.cpp
index c0b01164d1085..b8555229e180f 100644
--- a/src/monster.cpp
+++ b/src/monster.cpp
@@ -1591,7 +1591,7 @@ bool monster::is_immune_effect( const efftype_id &effect ) const
     }
 
     if( effect == effect_downed ) {
-        if( type->bodytype == "insect" || type->bodytype == "insect_flying" || type->bodytype == "spider" ||
+        if( type->bodytype == "insect" || type->bodytype == "flying insect" || type->bodytype == "spider" ||
             type->bodytype == "crab" ) {
             return x_in_y( 3, 4 );
         } else return type->bodytype == "snake" || type->bodytype == "blob" || type->bodytype == "fish" ||